Liquid transfusing tube and liquid transfusing tube set

ABSTRACT

A liquid transfusing tube and a liquid transfusing tube set in which a liquid transfusing line can be extended readily and quickly. The liquid transfusing tube comprises a flexible tube constituting the liquid transfusing channel, a connector provided at one end part of the tube, and a pointed bottle needle provided at the other end part of the tube and being connected to the side of a liquid transfusing bag containing a liquid being transfused. A roller klemme and a drip tube are provided in the middle of the tube. The connector has two female connectors, a male connector, and an operating lever and the communication pattern between the inner cavity of the female connector and that of the female connector or that of the male connector can be selected by means of the operating lever.

TECHNICAL FIELD

The present invention relates to a liquid transfusing tube and a liquidtransfusing tube set.

BACKGROUND ART

In a conventional liquid transfusing set (liquid transfusing apparatus),a liquid transfusing tube is provided with a male lure connector at itsend part (distal end) on the side of connection to a patient. Therefore,in order to secure a plurality of liquid transfusing routes, it has beennecessary to provide the tube on the patient's side with a three-waycock, a multiple-way cock, or the like so as to obtain the condition inwhich a liquid transfusing route or routes can be additionally provided,i.e., the plurality of liquid transfusing tubes can be connected (see,for example, Japanese Patent Laid-open No. Hei 4-354952).

For example, although liquid transfusing sets having a three-way cockprovided at an intermediate part of a liquid transfusing route have beencommercialized, the number of liquid transfusing routes required variesdepending on the patient or the patient's condition, and the number ofliquid transfusing routes, which must preliminarily be prepared, is notknown. In view of this, it is a general practice to collect data on thenumber of liquid transfusing routes used from many patients, calculatean average number of liquid transfusing routes used from the data, andconfigure the liquid transfusing routes by providing reserve portscapable of connection with liquid transfusing tubes the number, whichnumber is one or two greater than the average number of liquidtransfusing tubes used.

However, the patients requiring the reserve ports are in many casesthose whose conditions are highly liable to change suddenly, and most ofthe patients to be treated by the liquid transfusing treatment do notrequire the reserve ports. However, the liquid transfusing sets providedwith the reserve ports must be prepared for the small number ofpatients, which raises the cost of the liquid transfusing sets, orincreases the number of kinds of the liquid transfusing sets to beprepared in each hospital, which costs much for stock control, leadingto a rise in medical expense.

In addition, when the number of kinds of liquid transfusing sets hasbeen increased, it is necessary to selectively use the different kindsof liquid transfusing sets, leading to a higher risk of making a mistakein the method of using the same.

Moreover, when the patient's condition has changed suddenly or in othersimilar situations, the reserve ports prepared beforehand maytemporarily become insufficient.

In such a case, it is necessary to once stop the liquid transfusion,occlude the liquid transfusing route, then open the liquid transfusingroute, and to assemble a three-way cock or the like into the course ofthe liquid transfusing route. In this instance, it is necessary to carryout a work needing much labor and time, i.e., to assemble the cock intothe liquid transfusing route, apply syringe suction for removing air,which has been mixed into the liquid transfusing route on the patient'sside, perform priming of the liquid on the stopped side, therebyeliminating air stagnating in the liquid transfusing route, and then toconnect the liquid transfusing tube.

Besides, the liquid transfusing routes may be mis-connected, or dosingspeed may be mis-set in again setting the flow rate (setting the dosingspeed).

In addition, when suction through a syringe is applied to removal of airpresent in the liquid transfusing route on the patient's side, thepatient's blood may flow back into a catheter indwelling in the patient,and the blood may become liable to coagulate, possibly causing theformation of thrombus. Therefore, it becomes necessary to exchange theindwelling catheter earlier than scheduled, which adversely affects thepatient.

Besides, although there are needleless connectors developed forpreventing puncture accidents in medical staff or for maintainingcleanliness at the time of connection, the needleless connectors arebased on the assumption of closed circuits. Therefore, it is impossibleto increase the number of liquid transfusing tube connection locationsin the course of the liquid transfusing route. In the situation wherethe number of the connection locations is insufficient, it is necessaryto adopt a use method in which the portion on the distal end of theliquid transfusing route provided with the needleless connector isopened and which considerably impairs the characteristic feature ofconnecting the liquid fusing tubes while maintaining the cleanliness ina closed circuit. Also in this case, like in the above-mentioned case,the method in which a larger number of reserve ports than expected to beneeded are provided results in that it is unknown how many reserve portsshould be provided. Eventually, the number of reserve ports will beinsufficient. In this manner, the rise in cost, the labor and time takenfor air removal, the risk of generating a mistake in setting the dosingspeed, and a cause of thrombus, are the same as in the above-mentionedcase.

DISCLOSURE OF INVENTION

In order to solve the above-mentioned problems involved in the relatedart, the present invention has an object of providing a liquidtransfusing tube and a liquid transfusing tube set in which a liquidtransfusing line (liquid transfusing route) can be extended readily andquickly.

The above object can be attained by the present invention as set forthin the following paragraphs (1) to (17).

(1) A liquid transfusing tube including:

a tube constituting a liquid transfusing channel;

a connector provided at one end part of the tube and having a maleconnector and a female connector; and

a connection part provided on the other side of the tube and connectedto the side of a containing part containing the liquid being transfused.

(2) A liquid transfusing tube as set forth in the above paragraph (1),wherein the axis of the male connector and the axis of the femaleconnector substantially coincide with each other.

(3) The liquid transfusing tube as set forth in the above paragraph (1)or (2), wherein the connector has a channel changeover function forchanging over the channel.

(4) The liquid transfusing tube as set forth in the above paragraph (1)or (2), wherein the connector is so configured as to be capable ofselecting a communication pattern between the inner cavity of the tube,the inner cavity of the male connector, and the inner cavity of thefemale connector.

(5) The liquid transfusing tube as set forth in any of the aboveparagraphs (1) to (4), wherein the connection part is a bottle needleconnected to a liquid container.

(6) The liquid transfusing tube as set forth in any of the aboveparagraphs (1) to (4), wherein the connection part is connected to asyringe.

(7) The liquid transfusing tube as set forth in any of the aboveparagraphs (1) to (6), including flow rate regulating means forregulating the flow rate of the transfusion, in the course of the tube.

(8) The liquid transfusing tube as set forth in any of the aboveparagraphs (1) to (7), including reverse flow inhibitive means forpermitting a flow from the connection part to the connector whileinhibiting a flow in the reverse direction, in the course of the tube.

(9) The liquid transfusing tube as set forth in any of the aboveparagraphs (1) to (8), wherein the male connector of the connector is soshaped as to be capable of liquid-tight connection to another femaleconnector having the same shape as that of the above-mentioned femaleconnector.

(10) The liquid transfusing tube as set forth in any of the aboveparagraphs (1) to (9), wherein the female connector of the connector isso shaped as to be capable of liquid-tight connection to another maleconnector having the same shape as that of the above-mentioned maleconnector.

(11) A liquid transfusing tube set including:

at least one liquid transfusing tube as set forth in any of the aboveparagraphs (1) to (10); and

a liquid dosing part for dosing a patient with the liquid beingtransfused, the liquid dosing part having a liquid dosing part sideconnector capable of being connected to the male connector or the femaleconnector of the connector of the liquid transfusing tube.

(12) The liquid transfusing tube set as set forth in the above paragraph(11), wherein the liquid dosing part has a bacteria-removing filter.

(13) The liquid transfusing tube set as set forth in the above paragraph(12), wherein the bacteria-removing filter is provided on the downstreamside relative to the liquid dosing part side connector.

(14) The liquid transfusing tube set as set forth in the above paragraph(12) or (13), wherein the liquid dosing part has a mixing injection porton the downstream side of the bacteria-removing filter.

(15) The liquid transfusing tube set as set forth in the above paragraph(14), wherein the mixing injection port can be connected to the maleconnector or the female connector of the connector of the liquidtransfusing tube.

(16) The liquid transfusing tube set as set forth in any of the aboveparagraphs (11) to (15), wherein the other end side of a tube having onits one end side a connection part connected to a liquid container isconnected to the liquid dosing part side connector.

(17) The liquid transfusing tube set as set forth in any of the aboveparagraphs (11) to (15), wherein the liquid dosing part side connectoris branched into a plurality of parts so that a connector provided onthe other end side of a tube having on its one end side a connectionpart connected to another liquid container other than the liquidcontainer and the connector of the liquid transfusing tube can besimultaneously connected.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a plan view showing a first embodiment of a liquid transfusingtube set according to the present invention.

FIG. 2 is a plan view showing the condition where one of liquidtransfusing tubes of the liquid transfusing tube set shown in FIG. 1 isconnected.

FIG. 3 is a plan view showing the condition where each of the liquidtransfusing tubes of the liquid transfusing tube set shown in FIG. 1 isconnected.

FIG. 4 is a plan view showing a modified example of the first embodimentof the liquid transfusing tube set according to the present invention.

FIG. 5 is a plan view showing another embodiment of the liquidtransfusing tube according to the present invention.

FIG. 6 is a plan view showing a further embodiment of the liquidtransfusing tube according to the present invention.

FIG. 7 is a plan view showing a second embodiment of the liquidtransfusing tube set according to the present invention.

FIG. 8 is a plan view showing the condition where one of liquidtransfusing tubes of the liquid transfusing tube set shown in FIG. 7 isconnected.

FIG. 9 is a plan view showing the condition where each of the liquidtransfusing tubes of the liquid transfusing tube set shown in FIG. 7 isconnected.

BEST MODE FOR CARRYING OUT THE INVENTION

Now, the liquid transfusing tube and the liquid transfusing tube setaccording to the present invention will be described in detail below,based on preferred embodiments shown in the accompanying drawings.

FIG. 1 is a plan view showing a first embodiment of the liquidtransfusing tube set according to the present invention, FIG. 2 is aplan view showing the condition where one of liquid transfusing tubes ofthe liquid transfusing tube set shown in FIG. 1 is connected, and FIG. 3is a plan view showing the condition where each of the liquidtransfusing tubes of the liquid transfusing tube set shown in FIG. 1 isconnected.

Incidentally, for convenience of description, in FIGS. 1 to 3, the sideof the blood vessel of the patient in the figures will be referred to as“the distal end”, and the side of the blood bag will be referred to as“the proximal end”.

The liquid transfusing tube set (liquid transfusing set) 1 shown inthese figures is an apparatus (set) for injecting (dosing) a liquid(transfusion) into a living body (patient).

The transfusion includes all the liquids, which can be dosed into theliving body, such as chemical liquids, correction electrolyte liquids,physiological saline, etc.

In addition, the kind of the chemical in the chemical liquid is notparticularly limited, and examples of the chemical include sedative,intravenous anesthetic, narcotic analgesic, local anesthetic,antidepolarizing muscle relaxant, vasopressor, hypotensive agent,coronary vasodilator, diuretic, antiarrhythmic agent, bronchodialator,hemostatic, vitamin agent, antibiotic drug, and lipid emulsion.

As shown in FIG. 1, the liquid transfusing tube set 1 has a liquiddosing part 2 for dosing a patient with the transfusion, and a pluralityof liquid transfusing tubes (in this embodiment, two liquid transfusingtubes 3 a and 3 b) which can be connected to the liquid dosing partthrough a connector. These components will be sequentially describedbelow.

The liquid dosing part 2 has an indwelling needle or catheter (in thisembodiment, an indwelling needle 21) permitted to indwell in a bloodvessel 110 of the patient, and a liquid dosing part side connector 22connected to a proximal end of the indwelling needle or catheter (inthis embodiment, the indwelling needle 21).

The material constituting the indwelling needle 21 is preferably aflexible polymer material, and examples thereof include thermoplasticresins such as polyolefins such as polyethylene, polypropylene, etc.,polyesters, and polyurethanes.

Incidentally, a tube not shown may be provided between the indwellingneedle 21 (or catheter) and the liquid dosing part side connector 22 soas to connect the indwelling needle 21 (or catheter) and the liquiddosing part side connector 22 to each other through the tube. In thiscase, the liquid dosing part side connector 22 may be provided at an endpart of the tube, or may be provided in the course of the tube.

The liquid dosing part side connector 22 is not particularly limitedinasmuch as it has a female connector or a male connector connectable toa male connector 323 or a female connector 322 of a connector 32 ofliquid transfusing tubes 3 a, 3 b, which will be described later. Inthis embodiment, a three-way cock is used as the liquid dosing part sideconnector 22.

The liquid dosing part side connector 22 has two female connectors 221,222, a male connector 223, and an operating lever (operating part) 224,and is so configured that a communication pattern between the innercavity of the female connector 221, the inner cavity of the femaleconnector 222, and the inner cavity of the male connector 223 can beselected by the operating lever 224 (the liquid dosing part sideconnector 22 has a channel changeover function for changing over thechannel).

Specifically, the liquid dosing part side connector 22 is so configuredthat the operating lever 224 can be moved to each of four positions,i.e., the position of the female connector 221, the position of thefemale connector 222, the position of the male connector 223, and aposition where no connector is present (in FIG. 1, the position wherethe operating lever 224 is directed in the sense opposite to the maleconnector 221). When the operating lever is moved to the position of thefemale connector 221, the inner cavity of the female connector 222 andthe inner cavity of the male connector 223 are communicated with eachother. When the operating lever 224 is moved to the position of thefemale connector 222, the inner cavity of the female connector 221 andthe inner cavity of the male connector 223 are communicated with eachother. When the operating lever 224 is moved to the position of the maleconnector 223, the inner cavity of the female connector 221 and theinner cavity of the female connector 222 are communicated with eachother. When the operating lever 224 is moved to the position where noconnector is present, the inner cavity of the female connector 221, theinner cavity of the female connector 222, and the inner cavity of themale connector 223 are all communicated with one another.

In addition, the axis of the male connector 223 and the axis of thefemale connector 222 coincide substantially with each other, and theaxis of the female connector 221 is substantially orthogonal to theseaxes. The male connector 223 and the female connector 222 aresubstantially coaxial with each other and are directed in oppositesenses, whereas the female connector 221 is set in a directionsubstantially orthogonal to the male connector 223 and the femaleconnector 222.

Besides, the female connectors 221 and 222 are so shaped as to becapable of liquid-tight connection with a male connector 323 of aconnector 32 of a liquid transfusing tubes 3 a or 3 b, which will bedescribed later.

Incidentally, while the male connector 323 of the connector 32 of theliquid transfusing tube 3 a or 3 b is connected to the liquid dosingpart side connector 22 in this embodiment, a female connector 322 of theconnector 32 of the liquid transfusing tube 3 a or 3 b may be connectedto the liquid dosing part side connector 22. Alternatively, both themale connector 323 and the female connector 322 of the connector 32 ofthe liquid transfusing tube 3 a or 3 b may be capable of connection tothe liquid dosing part side connector 22.

In the case where the male connector 322 of the connector 32 of theliquid transfusing tube 3 a or 3 b is connected to the liquid dosingpart side connector 22, for example, the female connectors 221 and 222of the liquid dosing part side connector 22 are replaced by maleconnectors, which are so shaped as to be capable of liquid-tightconnection with the female connector 322 of the connector 32 of theliquid transfusing tube 3 a or 3 b.

Besides, in the case where both the male connector 323 and the femaleconnector 322 of the connector 32 of the liquid transfusing tube 3 a or3 b can be connected to the liquid dosing part side connector 22, forexample, one of the male connectors 221 and 222 of the liquid dosingpart side connector 22 is replaced by a male connector, which is soshaped as to be capable of liquid-tight connection to the femaleconnector 322 of the connector 32 of the liquid transfusing tube 3 a or3 b.

The indwelling needle 21 has an outlet port 211 at its proximal end. Themale connector 223 of the liquid dosing part side connector 22 is inliquid-tight connection with the outlet port 211.

Now, the liquid transfusing tubes 3 a and 3 b will be described below.Since the liquid transfusing tube 3 a and the liquid transfusing tube 3b are configured in the same manner, one of them, i.e., the liquidtransfusing tube 3 a will be described as a representative of them.

The liquid transfusing tube 3 a includes a tube 31, a connector (branchtube) 32, and a bottle needle 35. The tube 31 is flexible andconstitutes the liquid transfusing channel. The connector (branch tube)32 is provided at one end part (distal end) of the tube 31 and has amale connector and a female connector. The bottle needle 35 has a sharpneedle tip and is provided on the other side (in this embodiment, at theother end part [proximal end]) of the tube 31 so as to function as aconnection part to be connected to the side of a liquid transfusing bag(liquid transfusing container) (containing part) 4 containing the liquidbeing transfused.

In addition, at an intermediate part of the tube 31, a roller klemme(roller type klemme) 33 and a drip tube 34 are provided as flow rateregulating means for regulating the flow rate of the transfusion.

A predetermined transfusion is contained in the liquid transfusing bag4. When the bottle needle 35 pierces (punctures) a plug (rubber plug) ofthe liquid transfusing bag 4, the liquid transfusing bag 4 and theliquid transfusing tube 3 a are connected to each other through thebottle needle 35, resulting in the condition where the transfusion canbe supplied from the liquid transfusing bag 4 to the side of the liquidtransfusing tube 3 a.

The drip tube 34 is disposed in the vicinity of the bottle needle 35.The drip tube 34 makes it possible to visually check the flow rate ofthe transfusion.

The roller klemme 33 is disposed between the connector 32 and the driptube 34.

The roller klemme 33 is composed of a klemme main body 331, and a roller(operating part) 332 disposed to be movable relative to the klemme mainbody 331. The tube 31 is clamped between the outer peripheral surface ofthe roller 332 and a bottom surface (inclined surface) inclined at apredetermined angle against the klemme main body 331, and the roller 332is moved relative to the klemme main body 331, whereby the degree ofclamping the tube 31 is varied, and the flow rate of the transfusion isthereby regulated.

With the roller 332 moved in a predetermined direction, the degree ofclamping the tube 31 is enhanced, and the flow rate of the transfusionis reduced. When the roller 332 is moved to the utmost, the inner cavityof the tube 31 is occluded, so that the liquid being transfused will notflow.

On the other hand, with the roller 332 moved in the sense reverse to theabove, the degree of clamping the tube 31 is reduced, and the flow rateof the transfusion is increased. When the roller 332 is moved to theutmost in this sense, the inner cavity of the tube 31 is fully opened,so that the flow rate of the transfusion is maximized.

The connector 32 is not particularly limited inasmuch as it includes amale connector and a female connector; in this embodiment, a three-waycock is used as the connector 32.

The connector 32 includes two female connectors 321, 322, a maleconnector 323, and an operating lever (operating part) 324, and thecommunication pattern among the inner cavity of the female connector321, the inner cavity of the female connector 322, and the inner cavityof the male connector 323 can be selectively obtained by means of theoperating lever 324 (thus, the connector 32 has a channel changeoverfunction for changing over the channel).

Specifically, the connector 32 is so configured that the operating lever324 can be moved to the four positions, i.e., the position of the femaleconnector 321, the position of the female connector 322, the position ofthe male connector 323, and the position where no connector is present(the position where the operating lever 324 is set in the sense oppositeto the female connector 321 in FIG. 1). When the operating lever 324 ismoved to the position of the female connector 321, the inner cavity ofthe female connector 322 and the inner cavity of the male connector 323are communicated with each other. When the operating lever 324 is movedto the position of the female connector 322, the inner cavity of thefemale connector 321 and the inner cavity of the male connector 323 arecommunicated with each other. When the operating lever 324 is moved tothe position of the male connector 323, the inner cavity of the femaleconnector 321 and the inner cavity of the female connector 322 arecommunicated with each other. When the operating lever 324 is moved tothe position where no connector is present, the inner cavity of thefemale connector 321, the inner cavity of the female connector 322, andthe inner cavity of the male connector 323 are all communicated oneanother.

In addition, the axis of the male connector 323 and the axis of thefemale connector 322 substantially coincide with each other, and theaxis of the female connector 321 is substantially orthogonal to theseaxes. In other words, the male connector 323 and the female connector322 are substantially coaxial with each other and are directed inopposite senses, and the female connector 321 is set in a directionsubstantially perpendicular to the male connector 323 and the femaleconnector 322.

The tube 31 is provided at its distal end with a male connector, whichis not shown, and the male connector is in liquid-tight connection tothe female connector 321 of the connector 32. Incidentally, the distalend of the tube 31 may be joined directly to the female connector 321.

Here, the male connector 323 of the connector 32 is so shaped as to becapable of liquid-tight connection with another female connector havingthe same shape as that of the female connector 322.

This ensures that the male connector 323 of the connector 32 of theliquid transfusing tube 3 a can be connected in a liquid-tight manner toa female connector of a connector of another liquid transfusing tube(for example, the female connector 322 of the connector 32 of the liquidtransfusing tube 3 b).

Besides, the female connector 322 of the connector 32 is so shaped as tobe capable of liquid-tight connection to another male connector havingthe same shape as that of the male connector 323.

This ensures that a male connector of a connector of another liquidtransfusing tube (for example, the male connector 323 of the connector32 of the liquid transfusing tube 3 b) can be connected in aliquid-tight manner to the female connector 322 of the connector 32 ofthe liquid transfusing tube 3 a.

In this manner, the connector 32 of any liquid transfusing tube can beconnected to the connector 32 of another liquid transfusing tube (anynumber of connectors 32 can be connected). For example, it is possibleto connect the connector 32 of the liquid transfusing tube 3 b to theconnector 32 of the liquid transfusing tube 3 a, to connect theconnector 32 of an other liquid transfusing tube not shown to theconnector 32 of the liquid transfusing tube 3 b, and thereafter tosequentially connect the connectors 32 of other liquid transfusing tubesin a similar manner.

Incidentally, while the connector 32 is the three-way cock in thisembodiment, in the present invention the connector 32 is not limited tothe three-way cock inasmuch as it is a connector having a male connectorand a female connector; for example, a connector not having the functionof changing over the channel, such as a needleless connector having amale connector and a female connector, may be adopted as the connector32.

The material constituting the tube 31 may be any of a wide range ofmaterials conventionally used for medical tubes, and specific examplesof the material include soft polyvinyl chloride, ethylene-vinyl acetatecopolymer, polybutadiene, etc., and materials based on these polymers.

Now, the actions of (method of using) the liquid transfusing tube set 1will be described below.

Here, description will be made taking as an example the case where theliquid transfusing tube 3 a is used as a first liquid transfusing line(first liquid transfusing route) for dosing a transfusion into apatient, i.e., principally as a liquid transfusing tube for flowtherethrough of a fundamental liquid or the like, and the liquidtransfusing tube 3 b is used as a second liquid transfusing line (secondliquid transfusing route) for dosing a transfusion into the patient,i.e., principally as an auxiliary route, for example, a liquidtransfusing tube for flow therethrough of a lipid emulsion, a remedy, anantibiotic drug, or the like.

In connecting the liquid transfusing tube 3 a, first, a retentive liquidagent, for example, is prepared in the liquid transfusing bag 4.

Next, as shown in FIG. 1, the bottle needle 35 of the liquid transfusingtube 3 a is made to pierce (puncture) a plug (rubber plug) of the liquidtransfusing bag 4 in which the transfusion is contained. This ensuresthat the liquid transfusing bag 4 and the liquid transfusing tube 3 aare connected to each other through the bottle needle 35, resulting inthe condition where the transfusion can be supplied from the liquidtransfusing bag 4 to the side of the liquid transfusing tube 3 a.

Subsequently, priming of the channel of the liquid transfusing tube 3 ais performed.

Next, as shown in FIG. 2, the male connector 323 of the connector 32 ofthe liquid transfusing tube 3 a is inserted and fitted into the femaleconnector 221 of the liquid dosing part side connector 22 having itsfemale connector 223 in liquid-tight connection with the outlet port 211of the indwelling needle 21 left indwelling in a blood vessel (forexample, a peripheral vein) 110 of the patient. This results in that thefemale connector 221 of the liquid dosing part side connector 22 and themale connector 323 of the connector 32 of the liquid transfusing tube 3a are connected liquid-tight with each other.

Subsequently, the operating lever 224 of the liquid dosing part sideconnector 22 is moved to the position of the female connector 222, andthe operating lever 324 of the connector 32 of the liquid transfusingtube 3 a is moved to the position of the female connector 322. Thisresults in that the inner cavity of the female connector 221 and theinner cavity of the male connector 223 of the liquid dosing part sideconnector 22 are communicated with each other, and the inner cavity ofthe female connector 321 and the inner cavity of the male connector 323of the connector 32 of the liquid transfusing tube 3 a are communicatedwith each other.

Next, the roller klemme 33 of the liquid transfusing tube 3 a isoperated to regulate the flow rate (dose rate) of the transfusion in theliquid transfusing tube 3 a to a prescribed flow rate (prescribed doserate) of the retentive liquid agent, and the transfusion is dosed.

Incidentally, the male connector 323 of the connector 32 of the liquidtransfusing tube 3 a may be connected to the female connector 222 of theliquid dosing part side connector 22. In this case, the operating lever224 of the liquid dosing part side connector 22 is moved to the positionof the female connector 221, thereby achieving communication between theinner cavity of the female connector 222 and the inner cavity of themale connector 223 of the liquid dosing part side connector 22.

In addition, the liquid dosing part side connector 22 may be omitted,and the male connector 323 of the connector 32 of the liquid transfusingtube 3 a may be connected to the outlet port 211 of the indwellingneedle 21. In this case, the male connector 323 and the outlet port 211are shaped for liquid-tight connection with each other.

Next, in connecting the liquid transfusing tube 3 b used for dosing anantibiotic drug, for example, at regular time intervals depending on thecondition of the patient, first, physiological saline containing theantibiotic drug dissolved therein is prepared in the liquid transfusingbag 4.

Subsequently, as shown in FIG. 2, the bottle needle 35 of the liquidtransfusing tube 3 b is made to pierce (puncture) a plug (rubber plug)of the liquid transfusing bag 4 in which the transfusion is contained.This ensures that the liquid transfusing bag 4 and the liquidtransfusing tube 3 b are connected to each other through the bottleneedle 35, resulting in the condition where the transfusion can besupplied from the liquid transfusing bag 4 to the side of the liquidtransfusing tube 3 b.

Next, priming of the channel of the liquid transfusing tube 3 b isconducted.

Subsequently, as shown in FIG. 3, the male connector 323 of theconnector 32 of the liquid transfusing tube 3 b is inserted and fittedinto the female connector 322 of the connector 32 of the liquidtransfusing tube 3 a. This results in liquid-tight connection betweenthe female connector 322 of the connector 32 of the liquid transfusingtube 3 a and the male connector 323 of the connector 32 of the liquidtransfusing tube 3 b.

Next, the operating lever 324 of the connector 32 of the liquidtransfusing tube 3 b is moved to the position of the female connector322. This makes communication between the inner cavity of the femaleconnector 321 and the inner cavity of the male connector 323, of theconnector 32 of the liquid transfusing tube 3 b.

Subsequently, the operating lever 324 of the connector 32 of the liquidtransfusing tube 3 a is moved to the position where no connector ispresent (the position where the operating lever 324 is set in the senseopposite to the female connector 321 in FIG. 3). This results in thatthe inner cavity of the female connector 321, the inner cavity of thefemale connector 322, and the inner cavity of the male connector 323, ofthe connector 32 of the liquid transfusing tube 3 a, are allcommunicated with one another.

Next, the roller klemme 33 of the liquid transfusing tube 3 b isoperated to regulate the flow rate (dose rate) of the transfusion in theliquid transfusing tube 3 b to a designated flow rate (designated doserate) of an antibiotic drug, and the transfusion is dosed.

In this manner, the patient can be dosed (mixedly dosed) with theretentive liquid agent via the liquid transfusing tube 3 a and with thephysiological saline containing the antibiotic drug dissolved thereinvia the liquid transfusing tube 3 b.

In addition, where the liquid transfusing line (liquid transfusingroute) is extended, the male connector 323 of the connector 32 of another liquid transfusing tube not shown is inserted and fitted into thefemale connector 322 of the connector 32 of the liquid transfusing tube3 b, in the same manner as above. This results in liquid-tightconnection between the female connector 322 of the connector 32 of theliquid transfusing tube 3 b and the male connector 323 of the connector32 of the other liquid transfusing tube.

Thereafter, any number of liquid transfusing lines can be extended inthe same manner.

Incidentally, the above-described method of using the liquid transfusingtube set 1 is merely one example, which is nonlimitative.

For example, in the case where a patient is dosed with a transfusion viathe liquid transfusing tube 3 a, the liquid may be replenished via theliquid transfusing tube 3 b.

As has been described above, according to the liquid transfusing tubeset 1, a port (female connector 322) for connection of a liquidtransfusing tube is always present, so that the liquid transfusing line(liquid transfusing route) can be extended quickly and assuredly.

Since the port (female connector 322) for connection of a liquidtransfusing tube is always present, there is no possibility of thecondition where, for example, the number of the connection ports forliquid transfusing tubes would be insufficient upon a sudden change inthe condition of the patient.

In addition, for extending the liquid transfusing line, it suffices toinsert and fit the male connector 323 of one connector 32 into thefemale connector 322 of the other connector 32, so that it is possibleto extend the liquid transfusing line while dosing the transfusion (forexample, dosing a tiny amount of a drug) via the liquid transfusing tubealready connected. This makes it possible to obviate the risk of thesituation where the symptom of the patient might be changed due to achange in the concentration of the drug in the blood, for example.

Besides, in extending the liquid transfusing line, it is unnecessary toopen the liquid transfusing line, reassemble the system, and reconnectthe components. This makes it possible to obviate the risks ofmisconnection of the liquid transfusing lines, an increase in the chanceof route contamination by bacteria, and the like.

Incidentally, in the present invention, the number of the liquidtransfusing tube(s) in the liquid transfusing tube set may be one, ormay be three or more.

In addition, in the present invention, in the case where the liquidtransfusing tube set includes a plurality of liquid transfusing tubes,the liquid transfusing tubes may all be the same, or may all bedifferent, or some of them may be the same.

Besides, in the present invention, as shown for example in FIG. 4, theliquid transfusing tube 3 a of the liquid transfusing tube set 1 may bereplaced by a liquid transfusing tube 3 c.

In this liquid transfusing tube set 1, a male connector not shown isprovided at one end part (distal end) of the tube 31 of the liquidtransfusing tube 3 c, and the male connector is connected liquid-tightwith a female connector 222 of a liquid dosing part side connector 22.Incidentally, the distal end of the tube 31 may be joined directly tothe female connector 222.

Now, another embodiment of the liquid transfusing tube according to thepresent invention will be described below.

FIGS. 5 and 6 are plan views showing another embodiment of the liquidtransfusing tube according to the present invention.

Hereinafter, description will be centered on the differences from theabove-described liquid transfusing tubes 3 a, 3 b, and description ofthe same points as above will be omitted.

The liquid transfusing tube 3 d shown in FIG. 5 includes, at anintermediate part of a tube 31, a check valve 36 as backflow inhibitivemeans for permitting the flow from a bottle needle (connection part) 35to a connector 32 and for inhibiting the flow in the reverse direction.

The check valve 36 is preferably disposed between the connector 32 and aroller klemme 33. Further, the check valve 36 is preferably disposed inthe vicinity of the connector 32.

Specific examples of the check valve 36 include one that has a valvemain body provided therein with a pair of plate-like opening/closingmembers. The opening/closing members are in close contact with eachother on the distal end side by elastic forces (recovering forces) andare so tapered as to be spaced farther apart toward the proximal endside. Therefore, in normal condition, the channel in the check valve 36is closed. In the case where the transfusion flow is directed from thedistal end side toward the proximal end side, the liquid exerts apressure on the outside surfaces of the opening/closing members, actingto urge the opening/closing members into close contact with each other.Therefore, the transfusion would not flow from the distal end sidetoward the proximal end side.

On the other hand, in the case where the transfusion flow is directedfrom the proximal end side toward the distal end side, the liquid exertsa predetermined pressure on the inside surfaces (taper surfaces) of theopening/closing members, so that the opening/closing members aredeformed by the pressure so as to be spaced apart from each other, andthe channel in the check valve 36 is opened. As a result, thetransfusion flows from the proximal end side toward the distal end side.

According to this liquid transfusing tube 3 d, even where the connector32 does not have a channel changeover function, the check valve 36 canprevent the transfusion from flowing to the upstream side (proximal endside) of the liquid transfusing tube 3 d, even when another liquidtransfusing tube (for example, a liquid transfusing tube 3 e which willbe described later) is connected to the connector 32 of the liquidtransfusing tube 3 d and the transfusion is dosed from the anotherliquid transfusing tube under a certain pressure; thus, the transfusioncan be securely dosed into the patient.

In addition, according to the liquid transfusing tube 3 d, the sameeffects as those of the above-described liquid transfusing tubes 3 a, 3b can be obtained.

The liquid transfusing tube 3 e shown in FIG. 6 includes, at theproximal end of a tube 31, a female connector 37, which is connected tothe distal end (mouth part) of a syringe (containing part) 5 containinga transfusion, as a connection part for connection with the syringe 5.

Besides, for example, a tiny amount regulation orifice or the like maybe provided at an intermediate part of the tube 31, as flow rateregulation means for regulating the flow rate of the transfusion.

According to the liquid transfusing tube 3 e, the same effects as thoseof the above-mentioned liquid transfusing tubes 3 a, 3 b can beobtained.

In addition, the liquid transfusing tube 3 e may include, at anintermediate part of the tube 31, a check valve 36 as backflowinhibitive means for permitting the flow from a connector (connectionpart) 37 toward the connector 32 and inhibiting the flow in the reversedirection.

The check valve 36 is preferably disposed in the vicinity of theconnector 32.

Incidentally, the structure and the functions of the check valve 36 arethe same as those of the check valve 36 of the above-described liquidtransfusing tube 3 d shown in FIG. 5, so that the description thereof isomitted.

Due to the presence of the check valve 36, even where the connector 32does not have a channel changeover function, the check valve 36 canprevent the transfusion from flowing to the upstream side (proximal endside) of the liquid transfusing tube 3 e, even when another liquidtransfusing tube is connected to the connector 32 of the liquidtransfusing tube 3 e and the transfusion is dosed from the anotherliquid transfusing tube under a certain pressure; thus, the transfusioncan be securely dosed into the patient.

The above-mentioned liquid transfusing tubes 3 a, 3 b, 3 d, and 3 e canbe used either singly or in combination of two or more of them, in theabove-described liquid transfusing tube set 1.

Now, a second embodiment of the liquid transfusing tube set according tothe present invention will be described below.

FIG. 7 is a plan view showing the second embodiment of the liquidtransfusing tube set according to the present invention, FIG. 8 is aplan view showing the condition where one of liquid transfusing tubes ofthe liquid transfusing tube set shown in FIG. 7 is connected, and FIG. 9is a plan view showing the condition where each of the liquidtransfusing tubes of the liquid transfusing tube set shown in FIG. 7 isconnected.

Hereinafter, description will be centered on the differences of theliquid transfusing tube set 1 in the second embodiment from theabove-described first embodiment, and description of the same points asabove will be omitted.

The liquid transfusing tube set 1 in the second embodiment shown inthese figures is the same as the above-described first embodiment,except that a liquid dosing part 2 is different from the above.

As shown in FIG. 7, the liquid transfusing tube set 1 according to thesecond embodiment includes the liquid dosing part 2, and the same liquidtransfusing tubes 3 b, 3 c, and 3 e in the first embodiment describedabove.

The liquid dosing part 2 includes an indwelling needle or catheter (inthis embodiment, a catheter 23) left indwelling in a blood vessel 110 ofa patient, a connector (in this embodiment, a three-way cock) 24connected to the proximal end of the indwelling needle or catheter (inthis embodiment, the catheter 23), a tube 25 which is flexible andconstitutes a liquid transfusing channel, a male connector 26 providedat the distal end of the tube 25, a connector (in this embodiment, athree-way cock) 27 provided at the proximal end of the tube 25, a liquiddosing part side connector (in this embodiment, a three-way cock) 28,and a bacteria-removing filter 29.

Incidentally, the indwelling needle or catheter and the connector 24 maybe connected to each other through a tube.

The connector 24 includes two female connectors 241, 242, a maleconnector 243, and an operating lever (operating part) 244, and thecommunication pattern among the inner cavity of the female connector241, the inner cavity of the female connector 242, and the inner cavityof the male connector 243 can be selected by means of the operatinglever 244 (thus, the connector 24 has a channel changeover function forchanging over the channel).

The catheter 23 has an outlet port 231 at its proximal end, and the maleconnector 243 of the connector 24 is in liquid-tight connection with theoutlet port 231.

In addition, the male connector 26 provided at the distal end of thetube 25 is in liquid-tight connection with the female connector 241 ofthe connector 24.

The liquid dosing part side connector 28 includes three femaleconnectors 281, 282, 283, and an operating lever (operating part) 284,and is so configured that the communication pattern among the innercavity of the female connector 281, the inner cavity of the femaleconnector 282, and the inner cavity of the female connector 283 can beselected by means of the operating lever 284 (thus, the liquid dosingpart side connector 28 has a channel changeover function for changingover the channel).

Similarly, the connector 27 includes three female connectors 271, 272,273, and an operating lever (operating part) 274, and is so configuredthat the communication pattern among the inner cavity of the femaleconnector 271, the inner cavity of the female connector 272, and theinner cavity of the female connector 273 can be selected by means of theoperating lever 274 (thus, the connector 27 has a channel changeoverfunction for changing over the channel).

Incidentally, details of the connectors 24, 27 and the liquid dosingpart side connector 28 are substantially the same as those of the liquiddosing part side connector 22 in the first embodiment described above.Therefore, the description thereof is omitted.

As shown in FIG. 7, a male connector 38 is provided at the distal end ofa tube 31 of the liquid transfusing tube 3 c, and the male connector 38is in liquid-tight connection with the female connector 282 of theliquid dosing part side connector 28.

In addition, the bacteria-removing filter 29 is provided on thedownstream side relative to the liquid dosing part side connector 28,and the connector 27 is provided on the downstream side of the filter29.

Specifically, one end side (downstream side) of the filter 29 isconnected liquid-tight to the female connector 272 of the connector 27,and the other end side (upstream side) of the filter 29 is connectedliquid-tight to the female connector 283 of the liquid dosing part sideconnector 28.

The female connector 271 of the connector 27 constitutes a mixinginjection port to which the liquid transfusing tube 3 b or 3 e or thelike is connected.

In dosing a transfusion into a patient, the male connector 323 of theconnector 32 of the liquid transfusing tube 3 b or 3 e is connected tothe female connector 281 of the liquid dosing part side connector 28 orto the female connector 322 of a connector 32 of an other liquidtransfusing tube (3 b in FIG. 8) connected to the liquid dosing partside connector 28 in the case where the transfusion may or must bepassed through the filter 29. In the case where the transfusion must notbe passed through the filter 29, the male connector 323 is connected tothe male connector 271 of the connector 27 or to the female connector322 of the connector 32 of the other liquid transfusing tube connectedto the connector 27.

Incidentally, while the male connector 323 of the connector 32 of theliquid transfusing tube 3 b or 3 e or the like, for example, isconnected to the connector 27 in this embodiment, there may be adopted aconfiguration in which, for example, the female connector 322 of theconnector 32 of the liquid transfusing tube 3 b or 3 e is connected tothe connector 27, or a configuration in which both the male connector323 and the female connector 322 of the connector 32 of the liquidtransfusing tube 3 b or 3 e can be connected to the connector 27.

In the case where the female connector 322 of the connector 32 of theliquid transfusing tube 3 b or 3 e is connected to the connector 27, forexample, the female connector 271 of the connector 27 is replaced by amale connector, which is so shaped as to be capable of liquid-tightconnection with the female connector 322 of the connector 32 of theliquid transfusing tube 3 b or 3 e.

Now, the functions of (method of using) the liquid transfusing tube set1 will be described below.

Here, description will be made by taking as an example the case wherethe liquid transfusing tube 3 c is used as a first liquid transfusingline (first liquid transfusing route) for dosing a transfusion into apatient, i.e., principally a liquid transfusing tube for flowtherethrough of a high-calorie transfusion, a fundamental liquid, or thelike, while the liquid transfusing tube 3 b is used as a second liquidtransfusing line (second liquid transfusing route) for dosing atransfusion into the patient, i.e., principally as an auxiliary route,for example, a liquid transfusing tube for flow therethrough of a lipidemulsion, a remedy, an antibiotic drug, or the like, and the liquidtransfusing tube 3 e is used as a third liquid transfusing line (thirdliquid transfusing route) for dosing a transfusion into the patient,i.e., principally as an auxiliary route, for example, as a liquidtransfusing tube for flow therethrough of a tiny quantity of a remedy orthe like.

In connecting the liquid transfusing tube 3 c, first, a high calorietransfusion, for example, is prepared in a liquid transfusing bag 4.

Next, as shown in FIG. 7, a bottle needle 35 of the liquid transfusingtube 3 c is made to pierce (puncture) a plug (rubber plug) of the liquidtransfusing bag 4 in which the transfusion is contained. This ensuresthat the liquid transfusing bag 4 and the liquid transfusing tube 3 care connected to each other through the bottle needle 35, resulting inthe condition where the transfusion can be supplied from the liquidtransfusing bag 4 to the side of the liquid transfusing tube 3 c.

Subsequently, priming of the channel of the liquid transfusing tube 3 cis performed.

Next, the male connector 38 of the liquid transfusing tube 3 c isinserted and fitted into the female connector 282 of the liquid dosingpart side connector 28 on the side of the catheter 23 left indwelling ina blood vessel (for example, a central vein or the like) 110 of apatient. This makes liquid-tight connection between the female connector282 of the liquid dosing part side connector 28 and the male connector38 of the liquid transfusing tube 3 c.

Subsequently, an operating lever 284 of the liquid dosing part sideconnector 28 is moved to the position of the female connector 281,whereas an operating lever 274 of the connector 27 is moved to theposition of the female connector 271, and an operating lever 244 of theconnector 24 is moved to the position of the female connector 241. Thisresults in that the inner cavity of the female connector 282 and theinner cavity of the female connector 283 in the liquid dosing part sideconnector 28 are communicated with each other, whereas the inner cavityof the female connector 272 and the inner cavity of the female connector273 in the connector 27 are communicated with each other, and the innercavity of the female connector 242 and the inner cavity of the maleconnector 243 in the connector 24 are communicated with each other.

This makes it possible to dose the high-calorie transfusion into thepatient via the filter 29.

Next, a roller klemme 33 of the liquid transfusing tube 3 c is operatedso as to regulate the flow rate (dose rate) of the transfusion in theliquid transfusing tube 3 c to a prescribed flow rate (prescribed doserate) of the high-calorie transfusion, and the liquid is dosed.

Subsequently, in connecting a liquid transfusing tube 3 b used fordosing, for example, an antibiotic drug, a physiological salinecontaining the antibiotic drug dissolved therein is first prepared inthe liquid transfusing bag 4.

Next, as shown in FIG. 7, a bottle needle 35 of the liquid transfusingtube 3 b is made to pierce (puncture) a plug (rubber plug) of the liquidtransfusing bag 4 in which the transfusion is contained. This ensuresthat the liquid transfusing bag 4 and the liquid transfusing tube 3 bare connected to each other through the bottle needle 35, resulting inthe condition where the transfusion can be supplied from the liquidtransfusing bag 4 to the side of the liquid transfusing tube 3 b.

Subsequently, priming of the channel of the liquid transfusing tube 3 bis carried out.

Next, as shown in FIG. 8, the male connector 323 of the connector 32 ofthe liquid transfusing tube 3 b is inserted and fitted into the femaleconnector 281 of the liquid dosing part side connector 28. This makesliquid-tight connection between the female connector 281 of the liquiddosing part side connector 28 and the male connector 323 of theconnector 32 of the liquid transfusing tube 3 b.

Subsequently, the operating lever 324 of the connector 32 of the liquidtransfusing tube 3 b is moved to the position of the female connector322, and the operating lever 284 of the liquid dosing part sideconnector 28 is moved to the position where no connector is present.This results in that the inner cavity of the female connector 321 andthe inner cavity of the male connector 323 in the connector 32 of theliquid transfusing tube 3 b are communicated with each other, and theinner cavity of the female connector 281, the inner cavity of the femaleconnector 282, and the inner cavity of the female connector 283 in theliquid dosing part side connector 28 are all communicated with oneanother.

This makes it possible to dose an antibiotic drug into the patientthrough the filter 29.

Next, the roller klemme 33 of the liquid transfusing tube 3 b isoperated to regulate the flow rate (dose rate) of the transfusion in theliquid transfusing tube 3 b to a prescribed flow rate (prescribed doserate) of the antibiotic drug, thereby dosing the transfusion.

Subsequently, in connecting the liquid transfusing tube 3 e used fordosing, for example, nitroglycerine at regular time intervals dependingon the condition of the patient, first, nitroglycerine is sucked andcontained into a syringe 5 as shown in FIG. 8.

Next, the female connector 37 is inserted and fitted into the distal end(mouth part) of the syringe 5. This makes liquid-tight connectionbetween the distal end of the syringe 5 and the female connector 37,resulting in the condition where the transfusion can be supplied fromthe syringe 5 to the side of the liquid transfusing tube 3 e.

Subsequently, the syringe 5 is set to a syringe pump which is not shown.

Next, priming of the channel of the liquid transfusing tube 3 e isperformed.

Subsequently, as shown in FIG. 9, the male connector 323 of theconnector 32 of the liquid transfusing tube 3 e is inserted and fittedinto the female connector 322 of the connector 32 of the liquidtransfusing tube 3 b. This makes liquid-tight connection between thefemale connector 322 of the connector 32 of the liquid transfusing tube3 b and the male connector 323 of the connector 32 of the liquidtransfusing tube 3 e.

Next, the operating lever 324 of the connector 32 of the liquidtransfusing tube 3 e is moved to the position of the female connector322. This results in that the inner cavity of the female connector 321and the inner cavity of the male connector 323 in the connector 32 ofthe liquid transfusing tube 3 e are communicated with each other.

Subsequently, the operating lever 324 of the connector 32 of the liquidtransfusing tube 3 b is moved to the position where no connector ispresent. This results in that the inner cavity of the female connector321, the inner cavity of the female connector 322, and the inner cavityof the male connector 323 in the connector 32 of the liquid transfusingtube 3 b are all communicated with one another.

As a result, nitroglycerine can be dosed into the patient through thefilter 29.

Next, the operating part on the syringe pump side is operated toregulate the flow rate (dose rate) of the transfusion in the liquidtransfusing tube 3 e to a prescribed flow rate (prescribed dose rate) ofnitroglycerine, and the transfusion is dosed.

In this manner it is possible to dose (mixingly inject) the patient withthe high-calorie transfusion via the liquid transfusing tube 3 c, withthe physiological saline containing an antibiotic drug dissolved thereinvia the liquid transfusing tube 3 b, and with nitroglycerine via theliquid transfusing tube 3 e.

According to this liquid transfusing tube set 1, the same effects as inthe first embodiment described above can be obtained.

While the liquid transfusing tube and the liquid transfusing tube setaccording to the present invention have been described above based onthe embodiments shown in the figures, the invention is not limited tothe embodiments, and the configurations of the individual parts can bereplaced by arbitrary configurations having the same or equivalentfunctions.

Incidentally, the present invention may be carried out by combiningarbitrary two or more configurations (characteristic features) of theabove-described embodiments.

In addition, the liquid transfusing tube set according to the presentinvention may lack a part of the liquid dosing part, for example, theindwelling needle or catheter or the like. It suffices for the liquiddosing part to have the liquid dosing part side connector (for example,the liquid dosing part may be constituted only of the liquid dosing partside connector).

INDUSTRIAL APPLICABILITY

As has been described above, according to the present invention, theliquid transfusing line (liquid transfusing route) can be extendedreadily, quickly, and assuredly.

1. A liquid transfusing tube set comprising: at least one liquidtransfusing tube comprising: a tube constituting a liquid transfusingchannel and having an axis; a connector provided at one end of saidtube; and a connection part provided on an opposite end of said tube andconnected to a side of a containing part containing a transfusion;wherein said connector includes a male connector and a female connector,the axis of said male connector and the axis of said female connectorsubstantially coincide with each other, and the axis of said tube issubstantially orthogonal to the axis of the male connector and the axisof said female connector; a liquid dosing part for dosing a patient withsaid transfusion, said liquid dosing part having a liquid dosing partside connector connectable to one of said male connector and said femaleconnector of said connector of said liquid transfusing tube; and in acondition where one of said male connector and said female connector ofsaid connector of said liquid transfusing tube and said liquid dosingpart side connector of said liquid dosing part are connected with eachother, the other of said male connector and said female connector ofsaid connector of said liquid transfusing tube is connectable to anotherliquid transfusing tube other than said liquid transfusing tube; and theother of said male connector and said female connector of said connectorof said liquid transfusing tube is exposed as an open connection port toreceive a male or female connector of the another liquid transfusingtube.
 2. The liquid transfusing tube set as set forth in claim 1,wherein said connector has a channel changeover function for changingover the channel.
 3. The liquid transfusing tube set as set forth inclaim 1, wherein said connector is so configured that a communicationpattern among an inner cavity of said tube, an inner cavity of said maleconnector, and an inner cavity of said female connector can be selected.4. The liquid transfusing tube set as set forth in claim 1, wherein saidliquid dosing part has a bacteria-removing filter.
 5. The liquidtransfusing tube set as set forth in claim 4, wherein saidbacteria-removing filter is provided on the downstream side relative tosaid liquid dosing part side connector.
 6. The liquid transfusing tubeset as set forth in claim 4, wherein said liquid dosing part has amixing injection port on the downstream side of said bacteria-removingfilter.
 7. The liquid transfusing tube set as set forth in claim 1,wherein one end of a the another liquid transfusing tube has aconnection part connected to another liquid container, and an opposingend of said another liquid transfusing tube is connected to said liquiddosing part side connector.
 8. The liquid transfusing tube set as setforth in claim 1, wherein said liquid dosing part side connector isbranched into a plurality of parts so that a connector provided on oneend of the another liquid transfusing tube and said connector of saidliquid transfusing tube can be simultaneously connected, an opposing endof the another liquid transfusing tube having a connection partconnected to another containing part other than said containing partassociated with said liquid transfusing tube.
 9. The liquid transfusingtube set as set forth in claim 1, wherein the connector is directlyconnected to said tube.
 10. The liquid transfusing tube set as set forthin claim 1, wherein the male connector and the female connector are onopposing sides of said connector.